http://xination.pixnet.net/blog/post/23925478
lumen
n.光通量單位 [ Optics. the unit of luminous flux]
luminary
n.發光的星體 [a celestial body, as the sun or moon.]
ps. 只要是能發光的物體都可以較作luminary
n.才智出眾的人 [a person who has attained eminence in his or her field or is an inspiration to others]
ps.
illuminate
in-lumin(light)-ate
v.照亮 [ to supply or brighten with light; light up.]
v.闡明 [ To make understandable; clarify]
ex. even wrong guesses illuminate the problem.
lump
n. [a piece or mass of solid matter without regular shape or of no particular shape]
ex. a lump of coal.
ps. 還可以當方糖，lump of sugar, 就是泡咖啡用小方糖。
n.隆起,腫塊 [ a protuberance or swelling]
ex. a lump in her right breast
n.整個 [A collection or totality; an aggregate.]
ps. lump sum 一次付款額
ex. A pension is often commutable into a lump sum.
養老金常可改為一次性總付款
v.把...弄成一團 [To put together in a single group without discrimination.]
lunar
luna(moon)-ar
adj.月的 [ of or pertaining to the moon]
ex. the lunar orbit.
ex. lunar calendar
ps. 1 Luna 月亮女神
ps.2. Luna Sea ...超強的主唱：河村隆一 《I For You》...(歌詞)
lunatic
luna(moon)-tic
n.瘋子 [an insane person; a person whose actions and manner are marked by extreme eccentricity or recklessness.]
adj.瘋的,精神錯亂的 [insane; demented]
ex. He must be lunatic to drive his car so fast.
他把車開這麼快一定是瘋了。
ps. 古代人認為精神病與月亮盈缺有關，因為精神病看起來是periodic的
lurch
n.突然傾斜 [an act or instance of swaying abruptly.]
ps. 可以用來指船突然傾斜一邊，比方說人進船的時候。
n.蹣跚 [ an awkward, swaying or staggering motion or gait.]
v.突然傾斜 [to make a lurch; move with lurches; stagger]
ex. The ship lurched in the storm.
ex. The car gave a start and then lurched forward.
聯想：On the way to the church, he walks with lurch.
ps.有一隻名叫Lurch的牛，很特別(see it)。
字源不詳
lurch <> progress smoothly
lurk
v.潛伏 [to lie or wait in concealment, as a person in ambush; remain in or around a place secretly or furtively.]
ex. a man lurking in the shadows.
ex. danger lurking around every bend.
v.偷偷地行動 [To move furtively; sneak.]
字源：c.1300, lurken "to hide, lie hidden," probably from Scand.
聯想：The turk is good at lurking. 土耳其人善於潛伏
c.f
lurk n.潛伏 意思較偏向單純指hide
ambush v.伏擊 除了有 hide外加 attack
lurid
adj.可怕的 [Causing shock or horror; gruesome.]
adj.火紅的; 豔紅的 [lighted or shining with an unnatural, fiery glow; wildly or garishly red]
ex. lurid sunset
豔紅色的夕陽
adj.轟動的 [glaringly vivid or sensational; shocking]
ex. a lurid account of the crime
字源： L. lu-ridus 最原先的意思是「可怕的」，後來變成可怕的顏色;類似血的顏色，就是豔紅色。在18xx年，才有「sensational」的字義出現。
聯想： lu + red 這樣看，裡面就有個紅色了。
lush
adj.蒼翠繁茂的 [Having or characterized by luxuriant vegetation.]
ex. The beautifully landscaped gardens sprawl with lush vegetation.
adj.豪華的 [characterized by luxuriousness, opulence]
ex. the lush decoration of a grand hotel.
聯想：The bush is lush. 這灌木叢蒼翠繁茂。
字源：跟字根lax loosen有關，因為原指植物鮮嫩多汁，很柔翠。
lush <> sere adj.乾焦的;枯萎的
lustrous
luster-ous
adj.有光澤的 [having luster; shining]
ex. lustrous pearls
明亮的珍珠
lust
n.強烈的慾望 [An overwhelming desire or craving]
ex. the lust of conquest 征服欲
ex. wanderlust 旅行癖
n.強烈的性慾 [Intense or unrestrained sexual craving.]
ps.《 Love or Lust 》 平井堅的歌
v.強烈地渴望 [ to have a yearning or desire; have a strong or excessive craving]
luxury
luxur(excess)-y
n.奢侈品 [Something inessential but conducive to pleasure and comfort.]
ex. Cream cakes are no long a luxury.
奶油蛋糕再也不是奢侈品了。
n.奢侈,奢華 [Sumptuous living or surroundings]
ex. They live in luxury.
他們生活奢華。
字源： L. luxuria excess
luxurious
adj.奢侈的 [characterized by luxury]
adj.豪華的;非常舒適的 [Of a sumptuous, costly, or rich variety]
ex. luxurious hotels.
luxuriant
adj.繁茂的 [Characterized by rich or profuse growth ; producing or yielding in abundance]
ex. Luxuriant forests covered the hills.
山丘上長滿茂密的樹木。
ex. a luxuriant imagination
豐富的想像力
這兩個字常常被搞混。
luxurious 是形容奢侈的、豪華的；它是高檔的(high quality)，但不一定要數量多
luxuriant 是形容繁茂的；它是數量多的(high quantity)，但不一定要高檔
如果你說，luxurious sakura, 是指很高檔的櫻花，很貴、很難買到。
而 luxurant sakura，是指很多櫻花，像三月櫻花翩翩。
另外，我們之前也提過 florid vs flourish ... review p.206
florid adj.華麗的(有過份、不好的意味在)
flourish n/v.茂盛,繁茂
lyric
lyra- ic
n.抒情詩;抒情作品 [Of or relating to a category of poetry that expresses subjective thoughts and feelings, often in a songlike style or form.]
n.歌詞
adj. 抒情的
ex. a lyric love poem
一首愛情抒情詩
字源：from Gk. lyre 指一種琴，長的有點像harp，在希臘的神話中lyre是Hermes從一個牛身體中拉出來的。
在古希臘時代，詩歌是用一種被稱為「詩琴」（lyre）的樂器在伴奏下吟唱的，猶如我國古代《詩經》中的詩篇是吟唱的一樣。這種樂器因有七根弦，可以抱在懷中，因而也稱七絃琴、抱琴或里拉琴。
ps. 現在lyra 指天琴座
libretto:opera＝lyrics:song
劇本:歌劇＝歌詞:歌曲
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